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प्रश्न
Find the single discount (as a percent) equivalent to successive discounts of:
80% and 80%
उत्तर
Successive discounts = 80% and 80%
Let M.P. = ₹100
Then S.P. after two discounts
`=₹(100(100-80)xx(100-80))/(100xx100)`
`=(100xx20xx20)/(100xx100)=₹4`
∴ Total discount = ₹100 − 4 = ₹96
∴ Single discount = 96%
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